Definition of 'old maid'

Noun

1. an elderly unmarried woman
      Synonyms: spinster
2. any of various plants of the genus Zinnia cultivated for their variously and brightly colored flower heads
      Synonyms: zinnia old maid flower
3. commonly cultivated Old World woody herb having large pinkish to red flowers
      Synonyms: periwinkle rose periwinkle Madagascar periwinkle Cape periwinkle red periwinkle cayenne jasmine Catharanthus roseus Vinca rosea
4. the loser in a game of old maid
5. a card game using a pack of cards from which one queen has been removed; players match cards and the player holding the unmatched queen at the end of the game is the loser (or `old maid')

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